Glass apparatus for distillation essential oils 500ml compound:a boiling flask 500 ml with flange I.D. 100 mm , a lid DN100 with a socket 29/32 and a thermometer plug , a stillhead 29/32 , a condenser Liebig effective length 400 mm 29/32 ,a vacuum adapter29/32 and a boiling flask 250 ml low neck two thermometers -10 +110 degree supply with his clamps and seals